411.25% is the change from 80 to 409
Calculation steps:
[( 409 - 80 ) ÷ 80] x 100 = 411.25%
Formula
Percentage change = [(409 - 80) / 80] x 100
Subtract the new number by the original number
409 - 80 = 329
329 ÷ 80 = 4.1125
4.1125 x 100 = 411.25%
Example